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- Kuznetsov, S. N. 6 (%)
- Nagirner, D. I. 6 (%)
- Papoyan, V. V. 6 (%)
- Cherepashchuk, A. M. 5 (%)
- Grinin, V. P. 5 (%)

#### Publication

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- Pramana 79 (%)
- Astronomy Letters 71 (%)
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- Radiophysics and Quantum Electronics 69 (%)
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- Astronomy [x] 406 (%)
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## The large-scale magnetic field and sunspot cycles

### Journal of Astrophysics and Astronomy (2000-09-01) 21: 161-162 , September 01, 2000

## Corrigenda

### Journal of Astrophysics and Astronomy (1988-06-01) 9: 125 , June 01, 1988

## Current observational constraints on inflationary models

### Gravitation and Cosmology (2008-01-01) 14: 38-40 , January 01, 2008

We review current observational constraints on inflationary models and show that the Λ-inflation is observationally favored.

## Phonon drag effect in three- and two-dimensional electron systems

### Pramana (1987-05-01) 28: 489-501 , May 01, 1987

The nonequilibrium phonon flow drags the electrons, and depending upon experimental conditions manifests itself in the acoustoelectric current, acoustomagnetic field or acoustoelectric field. The results of these phenomena in Sn, Al, Ga, Ag measured with SQUID technique are discussed.

In the two-dimensional (2D) case the phonon drag is studied on the interface of bicrystals and on the cleavage (111) surface of Ge and on the inversion layer on (111) (100) planes of Si. In all these cases the phonon drag is about two orders of magnitude larger than in metals with the same charge density. This is due to the drag of surface electrons by nonequilibrium phonon of the whole specimen.

The Kohn resonance of phonons with Fermi surface and topological transitions on Fermi surface of 2D electrons produced sharp singularities of phonon drag effect in 2D cases.

## Radial pulsations of Wolf-Rayet stars and the problem of mass loss in them

### Astronomy Reports (2007-09-01) 51: 742-745 , September 01, 2007

In order to study the problem of mass loss by Wolf-Rayet stars, we carried out numerical simulations of non-linear pulsations of these objects. Although our computations do not show direct dynamical mass loss, qualitative estimates show that certain as yet unobserved pulsations could in principle, create conditions facilitating mass outflows from Wolf-Rayet stars.

## Mathematical modeling of relativistic corrections for precision laser ranging with the OZIRIS spacecraft

### Astronomy Reports (2007-06-01) 51: 512-517 , June 01, 2007

A mathematical model is constructed for the motion of an electromagnetic pulse used in laser ranging of the OZIRIS spacecraft. A formula is derived for the calculation of corrections to the distance of the spacecraft associated with the non-inertial motion of the laser station and the influence of the gravitational field of the Earth on the laser pulses. It is shown that these corrections must be taken into account when carrying out precision laser ranging of the spacecraft with the goal of distance determination to within 20 cm or better.

## Solution of a subsurface radio-imaging inverse problem in the approximation of a strongly refractive medium

### Radiophysics and Quantum Electronics (2007-04-01) 50: 299-307 , April 01, 2007

In the approximation of a strongly refractive medium, we solve the inverse problem of subsurface-radar imaging of buried inhomogeneities using data of multiposition ultra-wideband radio sounding. The fast Fourier transform is used for synthesizing a large aperture with focusing. A mathematical model of the proposed subsurface-imaging system is presented and its accuracy is estimated. The feasibility of the proposed method is confirmed by numerical simulations and model laboratory experiments.

## Gravitational interaction in the relational approach

### Gravitation and Cosmology (2008-01-01) 14: 41-52 , January 01, 2008

We develop the relational approach to the description of electromagnetic and gravitational interactions on the basis of the action-at-a-distance concept. The latter is an alternative to the short-range interaction concept used both in general relativity (in the geometric approach) and in field theory. It is shown how to pass on from the theory of two systems of relations (the space-time and current ones) to the Fokker-Feynman theory of direct particle interaction. In the framework of the generalized relational theory, a unified theory of the gravitational and electromagnetic interactions is built, in which gravitation is induced by electromagnetism. It is shown that these two kinds of interaction and manifestations of Mach’s principle are induced by minors of a unique 5 × 5 matrix of current relations.

## Tachyons in general relativity

### Pramana (1985-06-01) 24: 817-823 , June 01, 1985

The tachyonic version of the Schwarzschild (bradyonic) gravitational field within the framework of extended relativity is considered. The metric of a tachyonic black hole is obtained through superluminal transformations from a bradyonic metric. The extended space-time manifold of this geometry which includes both black and white tachyonic holes is analysed, and the differences between the tachyonic and bradyonic versions are noted. It is shown that the meanings of black holes, tachyons and bradyons depend on the character of the reference frame and are not absolute.

## Determining the photometric parameters of galactic novae from visual light curves

### Astronomy Letters (2008-04-01) 34: 241-248 , April 01, 2008

Based on visual estimates by AAVSO observers, we have constructed light curves for 80 Galactic novae flared up in 1986–2006 and determined the photometric parameters *m*_{vis}(max), *t*_{2}, and *t*_{3} for 64 novae. Using the empirical relation M_{V} (max) = −10.66(±0.33) + 2.31(±0.26) × log *t*_{2}, we have obtained the absolute magnitudes at maximum and apparent distance moduli of the novae.